Patch Tuesday 2026
The latest Patch Tuesday 2026 coverage — news, analysis, and updates from the WindowsNews.AI desk.
January 2026 Patch KB5040000 and KB5040001 Block AVD Logins, Crash Shutdowns
Microsoft's January 2026 Patch Tuesday updates have introduced two significant, verified regressions affecting enterprise environments, with one blocking Azure Virtual Desktop authentication and...
January 2026 Patch Tuesday: Critical DWM Flaw Among 112 CVEs Patched
Microsoft's January 2026 Patch Tuesday has delivered critical security updates addressing 112 vulnerabilities across Windows and Microsoft products, with particular urgency surrounding an actively...
Critical Windows DWM Zero-Day Exploited: CVE-2026-20805 Patch Analysis & CERT-In Advisory
Microsoft has issued an urgent security update addressing CVE-2026-20805, a critical zero-day vulnerability in the Windows Desktop Window Manager (DWM) that's being actively exploited in the wild....
January 2026 Windows 11 update KB5074109 fixes NPU battery drain and enables Secure Boot
Microsoft's January 2026 Patch Tuesday for Windows 11 has delivered more than the typical security fixes, introducing significant updates that address both performance concerns and security...
KB5030219 fixes 59 flaws, 5 critical, plus your domain-join woes and hover search.
Microsoft's September 2023 Patch Tuesday for Windows 11 delivered a compact but consequential update with KB5030219, advancing the operating system to Build 22621.2283. This cumulative update...
Microsoft's 2020 Update Pause: What It Meant for Windows 10 Security & Testing
In December 2020, Microsoft implemented a significant but quiet change to its Windows 10 update delivery cadence, pausing all non-security preview releases for the final month of the year. This...
Excel's CVE-2026-20949 bypasses Protected View; patch now to block business logic attacks.
Microsoft's January 2026 Patch Tuesday has brought to light a significant security vulnerability in its flagship spreadsheet application, Excel, designated as CVE-2026-20949. This flaw, categorized...
CVE-2026-20873: Critical Windows Management Services Flaw Demands Immediate Patching
Microsoft's confirmation of CVE-2026-20873 as an elevation-of-privilege vulnerability in Windows Management Services (WMS) has fundamentally altered this month's patch calculus for administrators and...
CVE-2026-20871: Microsoft Patches Critical DWM Privilege Escalation Flaw in Windows
Microsoft's January 2026 Patch Tuesday security updates addressed a significant elevation-of-privilege vulnerability in the Desktop Window Manager (DWM) component of Windows, tracked as...
Patch Now: CVE-2026-20861 in Windows Management Services Can Escalate to SYSTEM Privileges
Microsoft’s first Patch Tuesday of 2026 dropped a fix for a vulnerability that hands attackers a direct path to total system control—if they already have a toehold on your machine....
Patch Alert: CVE-2026-20923 Exploit Grants Attackers SYSTEM Control via Windows Management Services
Microsoft’s January 2026 Patch Tuesday fixes a local elevation-of-privilege vulnerability in Windows Management Services that could hand attackers full SYSTEM control of a machine. The flaw,...
Windows 11 KB5074109 Baseline & Hotpatch Cadence: Enterprise Security Guide 2026
Microsoft's January 2026 security baseline, published as KB5074109, represents a critical inflection point for enterprise Windows 11 management, establishing new security standards while introducing...